Mobil 1 0w30 racing $2

Thread on it in rebate section.

It has no API certs, so it doesn't have the "energy conserving" badge that would indicate friction modifiers that would be bad for your clutch.

Just put some in my Miata. It's very dark right out of the bottle, for whatever that's worth.
 
Interesting—a racing oil with an HTHS of only 3 cP. Now I feel better about running thinner oils on the street.
This is a non sequitur. Racing engines have different objectives than a street vehicle. For one thing, longevity and low wear are not a primary concern. It's one of the reasons a true racing oil is inappropriate for typical use.

Do you understand the issue?
 
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